E529 — Calcium oxide
E529 (Calcium oxide) appears in the ingredient lists of 15 products sold in the United Kingdom.
Nutri-Score
14 rated products
Median values
| Energy | 443 kcal |
| Sugars | 1.0 g |
| Saturates | 2.1 g |
| Salt | 3.0 g |
Status in the United States (FDA)
Listed in the FDA inventory “Substances Added to Food”, with the regulations 21 CFR 184.1210.
Technical effects listed by the FDA: anticaking agent or free-flow agent, dough strengthener, firming agent, nutrient supplement, ph control agent, processing aid, texturizer
The inventory is a partial list, and a listing is not an FDA approval of every use; the regulations set the permitted uses.
U.S. Food and Drug Administration, Substances Added to Food (updated 9/8/2026), public domain · CAS 1305-78-8 via Wikidata (CC0)
Products containing it, by country
Products listing this additive in each country edition of Shelfpedia (Open Food Facts data)
| Country | Products |
|---|---|
| United States | 16 |
| United Kingdom | 15 |
| France | 7 |
Products
15 products, most viewed first.
Source: Open Food Facts export of 23 October 2026, ODbL · Shelfpedia calculations (medians, distributions).